Machine for securing rods in pipes.



E. E. JOHNSON.

MACHINE FOR SECURING RODS IN PIPES.

Patented Mar. 14, 1916.

APPLICATION FILED OCT. 17, 1914.

5 SHEETS-SHEET I.

EUAHD EdflHNSElN N m m c n N o T n m n s A vw u c m R G O N M P m u L o c E n T Patented Mar. 14, 1916.

5 SHEETS-SHEET 2- f770e77f0 r idwaraazfaivsor; y/

4 k 5/3 flffar y E. E. JOHNSON.

MACHINE FOR SECURING RODS IN PIPES.

APPLICATION HLED OCT-17, 1914- WF/nesses: afio 42. 9%. Z d

THE COLUMBIA PLANOGRAPH 0., WASHINGTON, D. c.

E. E. JOHNSON. I

MACHINE FOR SECURING RODS IN PIPES.

APPLICATION FILED OCT-17.1914.

1,175,871. Patented Mar.14,1916.

5 SHEETSQ-SHEET 3.

Fl I17 74 WITNESSES INVENTEIR jm wm. EDWARD E...IE|HNEEIN= E. E. JOHNSON. MACHINE FOR SECURING RODS IN PIPES.

APPLICATION FILED OCT. 17. I914.

Patented Mar. 14, 1916.

HEET 4.

' Y o I I IIIIII m In: IIIII-II |l 'w'il IIIII II I i INVENTOR. EDWARD EJJDHNE|E|N= I ATTO NEYS.

E. E. JOHNSDN.

MACHINE FOR SECURING RODS IN PIPES APPLICATION HLED OCT. 11. 1914.

1,175,871. Patented Mar. 14, 1916.

5 $HEETSSHEET 5- O O O Q 0 FFKQE.

EDWARD E. JOHNSON, OF ST. PAUL, MINNESOTA.

MACHINE FOR SECURING RODS IN PIPES.

Specification of Letters Patent.

Patented Mar. 141, 1916.

Application filed October 17, 1914. Serial No. 867,198.

To all whom it may concern Be it known that I, EDWARD E. JOHNSON, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Machines for Securing Rods in Pipes, of which the following is a specification.

My invention relates to an apparatus or machine for securing metal rods uniformly throughout their length to the interior of formed pipes, particularly pipes formed of a series of perforated wires looked upon one another as said wires are progressively wound about a mandrel, as disclosed in my Patent No. 899,054, granted September 22, 1903. The construction of the said patented pipe is designed for use as a well strainer and comprises a cylindrical shell formed by a progressie winding of a perforated wire in a series of coils each of which is locked to the preceding coil, and it is the object of my invention to provide a machine for soldering rods to the inside of the pipe along an element of the cylinder and soldering said rods to each coil of which the pipe is formed.

The full objects and advantages of my invention will appear in connection with the detailed description thereof and are particularly pointed out in the claims.

In the drawings, illustrating the application of my invention in one form,Figure 1 is a side elevation of a portion of the ma chine showing the means for feeding the heating and straightening implement and supplying the same with air and fuel gas. Fig.2 is a side elevation view of a portion of the machine in continuation of that part shown in Fig. 1 showing the means for holding and properly positioning the pipe for receiving therethrough the heating and strengthening member. Fig. 3 is an enlarged end view of the pipe-holding elements shown in Fig. 2. Fig. e is a sectional view on line 4 l of Fig. 2 viewed in the direction of the arrow with a portion broken awayto show-the construction for oscillating the pipe holders. Fig. 5 is a sectional view on line 55 of Fig. Fig. 6 is a sectional view on line 66 of Fig. 1. Fig. 7 is a view of the mechanism for controlling a mixture of air and fuel gas going to the burner and for controlling the air to the blower and showing the means of adjustably connecting the device to the drive chain. Figs. 8, 9 and 10 are detail views of the transmission and shifting mechanism. Fig. 11 is an enlarged sectional side elevation of a portion of the machine showing the heater and straightener and parts associated therewith in operative position in the pipe. Fig. 12 is a bottom view of the heating and straightening member. Fig. 13 is a side elevation of the burner member in position. Fig. 1% is an end view of the same. Fig. 15 is a section on line l515 of Fig. 13.

As illustrated, the pipe holder comprises an elongated beam 20 supported by a series of standards 21. To the beam 20 are secured a series of castings 22, as illustrated in detail in Figs. 4 and 5. The castings each comprise a bifurcated offset member 23. In all of the members 23 is supported a straight edged bar 24 which is secured in position by means of set bolts 25. The upper edge of the bar 24 is as nearly in a straight horizontal line as may be practi cally obtained and provides the main support as well as setting guide for the pipe in which the reinforcing rods are to be soldered. J ournaled in all of castings 22 is a shaft 26 which is operated by hand by means of a ratchet lever 27, a set bolt 28 being employed to fix the shaft 26 in any desired position. with a housing 29 closed by a removable plate 30, as shown in detail in Fig. 4. And fast on the shaft 26, within the housings 29, are a. series of spur gears 31 which mesh with racks 32 on standards 33 slidably supported in the housings 29. To each of the standards 33 is secured by means of a set bolt 34 a crotch 35. All of the crotches 35, it will be seen, are movable vertically in unison. These crotches are adjusted by means of the set bolt 3 f so that the arms forming the same will simultaneously engage the walls of a length of pipe 36 which may be put into the machine to be rodded. The crotches 35 are slotted, as indicated at 37 in F at, so as to straddle the bar 24., thus enabling said crotches to be raised to a point where they will engage the walls of and hold positioned pipe of quite small diameter. Vith the crotches 35 in a position so that a length of pipe applied thereto will be received by the crotches and not contact with Each of castings 22 is provided straight edge 24, such a pipe is placed in the crotches and a ring 38 is applied to the end of the pipe pro ecting outside of a crotch 39 at the front of the machine. This ring is rigidly secured to the wall of pipe 36 by means of set bolts 40. The outer periphery of the ring 38 is provided with a series of notches 41 each of a width equal to the width of the supporting bar 24. The bar 24 is also provided with a notch 42 corresponding in size and depth to the notches 41 in the ring 38, as indicated in detail in Fig. 11. The notches 41 correspond to the position of the several rods which are to be secured to the inside of the pipe 36. A separate ring 38 will, of course, have to be provided for each size of pipe to be rodded, and the number of notches will vary according to the size of pipe from three for the smaller sizes to four or a greater number for the larger sizes. After the ring 38 has been secured to the pipe 36, the same is turned until a notch 41 comes in line with the notch 42 of bar 24. Then, by means of the ratchet lever 27 the crotches 35 are simultaneously lowered, dropping the pipe 36 with them until the lowermost element of sald pipe engages throughout its length the bar 24, the notch 42 of the bar and the notch 41 of the ring dove-tailing, as indicated in Fig. 11, whereby the pipe 36 is positioned and held fixed upon bar 24.

As indicated in Figs. 3 and 11, the bar 24 is cut away at 43 a short distance beyond notch 41, and to an extended portion 45, below the cutaway part 43, is bolted a U- piece 44. The bar 24 will preferably have a thickness equal to the diameter of the rods to be secured within the pipe 36, so that arms 46 and 47 of the U-piece 44 will be spaced apart a distance equal to the diameter of said rod. After the pipe 36 has been positioned upon the holding means, as above indicated, a piece of rod 48, of a length equal to that of the pipe, is inserted through the pipe, and the end of said rod is placed between the arms 46 and 47 of the U-piece 44. By means of a set bolt 49 said arms are caused to clamp the rod 48 rigidly in position.

It is to be noted that the rod 48 is a specially prepared rod having a linear groove cut in a straight line along one element of the rod, said groove being filled with solder and fluxing material, as indicated at 50 in Figs. 11, 14 and 15. This solderfilled slot is set into the rod 48 by means not herein disclosed and which form no part of the invention of this application, so that when said rod 48 is set so that the axis thereof, or any element of the cylindrical surface thereof, extends in a straight line, the slot will fall in such an element and extend in a straight line. It is necessary, therefore, in securing the end ner circumference of the pipe merely by applying in succession the slots 41 of ring 38 to the slot 42 of bar 24.

After the pipe has been set in position and the rod to be soldered thereto locked at its forward end within said pipe, the

.means which will now be described operate upon the rod to straighten the same and to heat the rod so as to melt the solder and flux in the slot therein and cause the solder to secure the rod to each of the successive coils of the pipe. These straightening and heating means comprise a burner 51 and an extended carrier tube 52, also a blower head 53 I connected by a pipe 54 by means of a bypass 55 with a flexible tube 56, which, in turn, is connected with a pipe 57 leading to a compressed-air reservoir, not shown. The carrier tube 52 is hollow, as indicated at 58 in Fig. 11, and the interior thereof is connected by a nipple 59 with a cylindrical opening 60 in the burner 51, the opening 60 being closed at the end by a cap 61. The other end of carrier tube 5:2 is closed by a cap 62, as indicated in Fig. 6, an offsetting pipe 63 connecting with the tube'52 adjacent said cap portion and being supported by a bracket 64 secured to tube 52. As best shown in Fig. 7 the pipe 63 connects with a valve casing 65, and from which extend two pipe connections 66 and 67. Pipe connection 66 is in communication through a valve member 68 with a coupling 69 which connects with the compressed-air pipe 56. Pipe 67 is in communication through a valve member 70 with a coupling 71 which connects through a flexible hose or pipe 72 with a gas-pipe 7 3 in communication with a source of fuel gas. It is to be noted that the by-pass 55 also connects directly with the coupling member 69, so that the blower 53 and the fuel-feed passage through the center of pipe 63 are both supplied from the same source of compressed air. A valve 74 in by-pass 55 regulates the air supply to the blower 53. A valve 75 in member 68 regulates the admission of air to valve chamber 65, while a similar valve 76 in valve member 70 regulates the admission of fuel gas to chamber 65. A valve 77 in valve chamber 65 regulates the rate of flow of the mixture of gas and air, the quality of which is determined by valve 75 and valve 76, such mixture passing through pipe 63 to the interior 58 of carrier tube 52, from which said mixture passes to the burner 51.

It will be ap The carrier tube 52 has a relatively thick wall, and in the lower side of this wall is formed a linear groove 78 of a diameter such as to just receive the rods 48 which are to be soldered to the inside of the wellscreen pipe. This groove extends throughout the length of the carrier tube 52 and embraces the rod 48 as said tube and the burner carried thereby are reciprocated back and forth in the well-screen pipe. The carrier tube and parts carried thereby are, in fact, supported by the rod within the groove when they are in the screen pipe. This construction, therefore, not only operates to positively straighten out and hold straight the rods 48 during the soldering operation, but also has the effect of holding said rod firmly upon all portions of the inner wall of the well screen at the point where the same rests upon the bar 24.

The burner construction is fully shown in Figs. 11, 12, 14- and 15. The central burner block, in which is the fuel-feed chamber 60, has secured thereto by means of screws 178 a pair of side plates '79, 80, which plates are provided with inwardly turned lips 81, 82 spaced apart sufficiently to admit the introduction between such lips of the rods 48. The burner block 51 is cut out between its ends, as indicated in Fig. 11, so that a burner chamber 83 has the rod 48 at the bottom thereof and is inclosed at the sides by the plates 79 and 80. Apertures 84 extend from the combustion mixture passageway into the combustion chamber 83 directly above the central portion of rod 48, and apertures 85 for the escape of the products of combustion are provided in the plates 79 and 80. Then the valve 77 is operated therewith to admit a mixture of fuel gas and air into fuel passageway 60, and the same is lighted, the flames are directed from aperture 81 directly upon the top of rod 48 and do not engage the screen pipe 36 at all. It may be here noted that the lips 81, 82 provide with their inner edges in effect a continuation of the walls of the slot 78 for straightening and holding the rod during the soldering operation. The blower tube 53 is, as clearly shown, brought close to the upper surface of rod -18 adjacent the end of burner block 51. This blower tube is provided with two rows of apertures 86 by which the air is directed upon and around the rod 18 so that the same is quickly cooled after emerging from the burner chamber 83, thereby setting the solder before the rod 48 is released from the weight of the carrier tube 52 and parts carried thereby, or has opportunity to warp away from the coils of the strainer pipe, thus insuring that the rod 48 shall be firmly secured to each of said coils.

It is an important part of my invention that the carrier tube and burner are reciprocated within and out of the well screen in a straight line, the movement into the tube being relatively rapid, which has the effect of straightening out the rod and warming the same sufficiently to hold and set flowing the flux, while the return movement is relatively slow so as to heat the rod to the point of melting the solder strip 50 by the action of the burner so that the same flows between the successive coils and the rod immediately thereafter to be set by the cooling action of the blast of air from blower 58. The means for so reciprocating the carrier rod and burner, which are shown in Figs. 1, 6 and 8 to 10, inclusive, will now be described.

Supported in alinement with and adjacent the end of the frame 20 is a table 90 set upon standards 91. Journaled upon a series of uprights 92 are flanged rollers 93 upon which the carrier tube 52 rests. A rail 94 is secured upon an offset 95 of uprights 92 at one side of the plane of the rollers 93, as best shown in Fig. 6. Dependent from the casting 6 is an arm 96 which has a guide or clasp 97 engaged over rail 94. By this means the carrier tube 52 and all parts connected therewith are supported in position to be reciprocated longi tudinally and are guided so as to travel in a straight line without movement axially, it being understood that rail 941 comprises approximately a straight edged guide. A series of crotched standards 98 are supported upon the table 90 and have j ournaled within the fork therewith a series of rollers or idler pulleys 99 provided with a flanged guideway having a central peripheral groove 100, as best shown in Fig. 6. Over these idler pulleys runs a sprocket chain 101 which is driven by a sprocket wheel 102 on a shaft 105 journaled in a frame 103 supported by a standard 101. The shaft 105 has thereon a multiple crown wheel 106 provided with a series of drive racks 107, 108, 109, 110 and 111, the pins of which extend outwardly from the face of the disk 106 in circles of successively diminishing diameter, the pins of each circle being spaced the same distance apart, as clearly shown in Fig. 9. A shaft 112 is journaled in the frame 103 in the same horizontal plane as shaft 105 and at right angles thereto so as to extend diametrically across the end of shaft 105, the shaft 112 having thereon a pulley 113 by means of which the same is driven from any desired source of power. Adjustably secured to shaft 112 is a sleeve 11% carrying freely rotatable thereon a hub 115 having a clutch face 116 and a spur gear 117 adapted to mesh with one or the other of the sets of drive racks 107-111, inclusive, on disk 106. lVith respect to the drive shaft 112, it will be noted that the spur gear 117 is normally loose or freely gear 119,

. and at different speeds.

rotatable independent of said drive shaft. Also loose on the shaft 112 is a bevel bear 118, which meshes with a bevel gear 119 fast on the end of shaft 105. The bevel gear 119 is held in meshing position with the as shown in Fig. 10, by means of an inner collar 120 which is fast on shaft 112, said collar 120 setting within an aperture 121 in the hub 122 of bevel gear 118, said hub also providing a clutch face 123. The shaft 112 is provided with a key 124; and upon said shaft, and splined to rotate therewith but slide along the same, are a pair of clutch sleeves 125, 126 having clutch faces adapted to engage, respectively, with clutch faces 116 and 123. The sleeves are engaged by fork arms 127 and 128 which are secured to move in unison by a connecting link 129 and are also secured to a hand rail 130 which extends throughout the length of the entire machine to the rod holding clamp 1-1 at the end thereof, so that the operator at any place along the machine can slide clutch sleeves 125 and 126 through to disconnect or reverse the machine, as may be desired.

It will thus be seen that the upper run of sprocket chain 101 may be made to travel backward and forward in reverse directions, lhe flexible pipes 56 and 7 2 permit such movement while connection with the compressed-air member and gas-main 73 continues intact. To connect the carrier rod 52 to the sprocket chain 101, a pin 131 is journaled in a boss 132 extending outwardly from the clasp 97. The pin 131 has thereon a cross pin 133 which is adapted to engage in an open-ended slot 13a formed in the upper portion of boss 132. Then, as shown in Fig. 6, the pin 131 is turned so as to permit the cross pin 133 to drop within slot 13%, the end of pin 131 will engage within a link of sprocket chain 101, said end passing without engagement over rollers 99 through the slots therein. By this construction the carrier tube 52 may, any time desired, be disconnected from sprocket chain 101 or readily connected thereto.

The operation of my machine has been quite fully given in connection with the detailed description thereof. After a wellscreen tube 30 has been properly positioned upon its support, and a rod 18 has had the end thereof secured by the clamp 1 1 with the solder strip 50 at that point turned toward the inner peripheral wall of the screen pipe, the operator will extend said rod so as to put the other end of the same in line with the slot 78 in carrier tube 52 and will then move the clutch members so as to throw clutch sleeve 125 into engagement with clutch 123. The constantly driven shaft 112 will then rotate the shaft at a relatively rapid rate, which will turn sprocket chain 101 and through the connection thereto will cause burner 51 and carrier rod 52 to travel within the pipe along the same to the clamp Q1. The burner '51 will at this time be lighted, and as the carrier tube moves above rod 18, said rod will be constrained to take a position within the groove 78, which will straighten the rod and at the same time the burner will heat the rod sufficiently to loosen the fluxing material associated with the solder in the groove 50 of the rod 18. When the carrier tube 52 and the burner 51 have passed through the strainer pipe and reach the other end thereof, the rod d8 will be within the groove 78 and will be supporting the entire weight of the forward part of the carrier tube and burner. lhe operator will then, through shifter rail 130, throw the clutch members so as to withdraw clutch and throw in clutch 126, which will reverse the drive and cause the parts to move backward, but at a much reduced rate owing to the difference in ratio of the bevel gear 119 and the pin wheels 107, etc. The return movement of the burner is so slow that the rod d8 is progressively heated to such a degree as to melt the solder in the groove 50. The melted solder runs out of said groove and upon the surfaces of the coils of the strainer pipe between such surfaces and the body of rod 18, both the surfaces of the coils and of the rods having been cleaned for reception of the solder by the flux set free during the inward travel of the burner. Immediately after the burner leaves any portion of the rod 48, and before the melted. solder has time to run off through the spaces between the successive coils of the pipe, or the rod 18 has opportunity to warp or come out of engagement with all of said coils,

roe

the air blast from blower 53 upon and 7 around the rod 18cools said rod and the solder between the same and the surfaces of the coils so that said solder is immediately set and the rod is secured to each of the coils of the strainer pipe. The variation in speed of return travel of the carrier rod and burner, provided by the multiplicity of pin wheels 107111, is for the purpose of adjusting said speed of travel to the character of rod being soldered, and to the character of strainer pipe. By these adjustments it is possible to regulate the speed of return travel of the burner so as to get perfect soldering results and insure the securing of the reinforced rod to each coil of the strainer pipe, which is one of the desired accomplishments of my machine.

I claim: 7

1. A machine for soldering rods along a linear element thereof tothe interior of pipes, comprising holding means for the pipe including a support engaged by the wall of the pipe in an element thereof throughout its length, means for straightening the rod and holding the same in contact with the inner wall of the pipe above and in the vertical plane of said support, and means for progressively soldering the rod to the pipe while the same is so held.

A machine for soldering rods along a linear element thereof to the interior of pipes, comprising holding means for the pipe including a support engaged by the wall of the pipe in an element thereof throughout its length, means for securing the end of the rod in the vertical plane of said support, means for straightening the rod and holding the same in contact with the inner wall of the pipe above and in the vertical plane of said support, and means for progressively soldering the rod to the pipe while the same is so held.

3. A machine for soldering rods along a linear element thereof to cylindrical pipes, comprising means for holding the pipe in fixed position with the walls thereof extended in a straight line, means for holding the rod to be soldered in engagement with the wall of the pipe and for straightening the same and constraining said rodto engage said pipe in an element thereof throughout the entire length of rod and pipe, and means for progressively soldering said rod to the pipe while so held.

4. A machine for soldering rods to the interior of pipes, comprising vertically adjustable holding means for the pipe, a straightedged rail with which the lowermost element of the pipe may be caused to engage throughout its length by adjustment of said supporting means, means for straightening and holding the rod to be soldered in engagement with the inner wall of the pipe above said rail, and means for progressively soldering the rod to the pipe While the rod is so held.

5. A machine for soldering rods to the interior of pipes, comprising vertically adjustable holding means for the pipe, a straightedged rail with which the lowermost element of the pipe may be caused to engage throughout its length by adjustment of said support ing means, means secured to the pipe for holding the same in fixed relation to said rail, means for straightening and holding the rod to be soldered in engagement with the inner wall of the pipe above said rail, and means for progressively soldering the rod to the pipe while the rod is so held.

6. A machine for soldering rods to the interior of pipes, comprising vertically adjustable holding means for the pipe, a straight-edged rail with which the lowermost element of the pipe may be caused to engage throughout its length by adjustment of said supporting means, a ring secured to the pipe having a portion thereof notched and dovetailing with a notched portion of the rail for holding the pipe in fixed relation to said rail, means for straightening and holding the rod to be soldered in engagement with the inner wall of the pipe above said rail, and means for progressively soldering the rod to the pipe While the rod is so held.

7. A machine for soldering rods to the in terior of pipes, comprising vertically adjustable holding means for the pipe, a straight-edged railwvith which the lowermost element of the pipe may be caused to engage throughout its length, a ring secured to the pipe and having a plurality of notches therein corresponding with the position of the rods to be soldered into the pipe, said notched portions of the ring clove-tailing with a notched portion of the rail to hold the pipe in fixed relation to said rail in the several successive positions in which the several rods are soldered therein, means for straightening and holding the rod to be soldered in engagement with the inner wall of the pipe above said rail, and means for progressively soldering the rod to the pipe while the rod is so held.

8. In a machine for soldering rods to the interior of pipes, a plurality of forked supporting members for receiving the pipe, a straight edge between the forked portion of said members for supporting the pipe along one element thereof, and means for simultaneously raising or lowering said forked members to bring the pipe into engagement with said straight-edged support.

9. In a machine for soldering rods to the interior of pipes, a plurality of forked supporting members for receiving the pipe, each of said supporting members being connected with a rack, a shaft, a series of pinions on said shaft meshing with the several racks, a straight edge between the forked portion of said members for supporting the pipe along one element thereof, and means under the control of the operator for rotating said shaft and for locking the shaft in any desired position.

10. A machine for soldering rods to the interior of pipes, comprising means for supporting the pipe, means adapted to be se cured to the pipe for holding the same in fixed position relative to said supporting means, means for straightening and holding the rod to be soldered within the pipe, and means for progressively soldering the rod to the pipe while the rod is so held.

11. A machine for soldering rods to the interior of pipes, comprising means for supporting the pipe, a ring adapted to be secured to the pipe, and means on the ring cooperating with said supporting means for holding the pipe in fixed position relative thereto, means for straightening and holding the rod to be soldered within the pipe, and means for progressively soldering the rod to the pipe while the rod is so held.

12. A machine for soldering rods provided with a linear groove filled with solder and flux to the interior of pipes, comprising means for supporting the pipe, means for straightening the rod and holding the same with the solder-filled groove down upon the surface of the pipe, a burner, and means for reciprocating said burner along the rod rapidly in one direction to heat the rod to the point of releasing the flux and slowly in the opposite direction to melt the solder and cause the same to flow between the pipe and the rod.

13. A machine for soldering rods provided with a linear groove filled with solder and fiux to the interior of pipes, comprising means for supporting the pipe, means for straightening the rod and holding the same with the solder-filled groove down upon the surface of the pipe, a burner, means for reciprocating said burner along the rod rapidly in one direction to heat the rod to the point of releasing the flux and slowly in the opposite direction to melt the solder and cause the same to flow between the pipe and the rod, and means for cooling the rod and setting the solder immediately after the burner has acted upon the rod to melt the solder.

14. A machine for soldering rods pro- Vided with a linear groove filled withsolder and flux to the interior of pipes, comprising means for supporting the pipe, means for straightening the rod and holding the same with the solder-filled groove down upon the surface of the pipe, a burner, means for reciprocating said burner along the rod rapidly in one direction to heatthe rod to the point of melting the flux and slowly in the opposite direction to melt the solder and cause the same to flow between the pipe and the rod, and a blower directing a current of air upon the rod to cool the same and set the solder immediately after the burner has acted upon the rod to melt the solder.

15. A machine for soldering rods to the interior of pipes, comprising a straightedged rail forming a support for the pipe along the lowermost element thereof, means for holding the pipe in fixed relation to said rail, means for straightening and holding the rod to be soldered in engagement with the inner wall of the pipe above said rail, and means for progressively soldering the rod to the pipe while the rod is so held.

16. A machine for soldering rods to the interior of pipes, comprising a straightedged rail forming a support for the pipe along the lowermost element thereof, a ring secured to the pipe having a portion thereof notched and dovetailing with a notched portion of the rail for holding the pipe in fixed relation to said rail, means for straightening and holding the rod to be soldered in engagement with the inner wall of the pipe above said rail, and means for progressively soldering the rod to the pipe while the rod is so held.

17 A machine for soldering rods to the interior of pipes, comprising a straightedgecl rail forming a support for the pipe along the lowermost element thereof, means for holding the pipe in fixed relation to said rail, a clamp on said rail on the end of the pipe for holding an end of the rod extending from the inside of the pipe in fixed position relative to said rail, means for straightening the rod to be soldered and holding the same in engagement with the inner wall of the pipe above said rail while the end of the rod is clamped, and means for progressively soldering the rod to the pipe while the rod is so held.

18. A. machine for soldering rods to the interior of pipes, comprising means for holding the pipe, means for clamping an end of the rod extending from the inside of the pipe to hold said end in fixed position, I

a member provided with a longitudinal groove adapted to receive and straighten the rod said rod meanwhile supporting the member within the pipe, and means to reciprocate the member upon the rod within the pipe to a point near the clamping point of the rod and out of the pipe.

19. A machine for soldering rods to the interior of pipes, comprising means for holding the pipe, means for clamping an end of the rod extending from the inside of the pipe to hold said end in fixed position, a member provided with a longitudinal groove adapted to receive and straighten the rod said rod meanwhile supporting the member within the pipe, means to reciprocate the member upon the rod within the pipe to a point near the clamping point of the rod and out of the pipe, and means for progressively soldering the rod to the pipe as the member is withdrawn from the pipe.

20. A machine for soldering rods to the interior of pipes, comprising means for holding the pipe, means for clamping an end of the rod extending from the inside of the pipe to hold said end in fixed position, a member provided with a longitudinal groove adapted to receive and straighten the rod said rod meanwhile supporting the member a tubular member provided with a longituv dinal groove adapted to receive and straighten the rod said rod meanwhile supporting the member within the pipe, a burner connected with the end of the tubular member, means to supply fuel mixture to the tubular member and burner, and means to reciprocate the member upon the rod within the pipe to a point near the clamping point of the rod and out of the pipe.

22. A. machine for soldering rods to the interior of pipes, comprising means for holding the pipe, means for clamping an end of the rod extending from the inside of the pipe to hold said end in fixed position, a member provided with a longitudinal groove adapted to receive and straighten the rod said rod meanwhile supporting the member within the pipe, a burner secured to the end of the member and comprising a pair of plates having inturned lips separated a distance equal to the width of the groove so as to receive the rod between said lips, and means to reciprocate the member and burner upon the rod within the pipe to a point near the clamping point of the rod and out of the pipe.

A machine for soldering to the interior of pipes metallic rods provided with a linear groove filled with solder and a flux, comprising means for supporting the pipe and rod in relative position so that the solder-filled groove extends along the surface of the interior of the pipe, a burner having a chamber with an opening along one side to receive the rod and which opening is completely closed by the rod, means for supply ing fuel mixture to the burner and for d1- recting the burner flame Within the burner chamber and upon the rod, and means for reciprocating said burner along the rod.

24. A machine for soldering rods to the interior of pipes, comprising means for holding the pipe, means for clamping an end of the rod extending from the inside of the pipe to hold said end in fixed position, a tubular member provided with a longitudinal groove adapted to receive and straighten the rod said rod meanwhile supporting the member within the pipe, a burner connected with the end of the tubular member, flexible means to supply fuel gas to the tubular member, flexible means to supply compressed air to the tubular member, means movable with the tubular member to control the mixture of gas and air delivered through the same to the burner, and means to reciprocate the member.

25. A machine for soldering rods to the interior of pipes, comprising means for holding the pipe and the rod in relative position for the soldering operation, a burner, a longitudinal carrier for the burner mounted for reciprocation along the interior of the pipe, a sprocket chain having a portion extended in parallel relation with said carrier, means to connect the carrier with the sprocket chain, and means under the control of the operator for driving the sprocket chain in opposite directions.

26. A machine for soldering rods to the interior of pipes, comprising means for holding the pipe and the rod in relative position for the soldering operation, a burner, a longitudinal carrier Ior the burner mounted for reciprocation along the interior of the pipe, a sprocket chain having a portion extended in parallel relation with said carrier, means to connect the carrier with the sprocket chain, and means under the control of the operator for driving the sprocket chain in opposite directions at different speeds.

27. A machine for soldering rods to the interior of pipes, comprising means for holding the pipe and the rod in relative position for the soldering operation, a burner, a longitudinal carrier for the burner mounted for reciprocation along the interior of the pipe, a sprocket chain having a portion extended in parallel relation with said car rier, a sliding pin for releasably connecting the carrier to the sprocket chain, and means under the control of the operator for driving the sprocket chain in opposite directions.

28. A machine for soldering to the interior of pipes metallic rods provided with a linear groove filled with solder and a flux, comprising means for supporting the pipe and rod in relative position so that the solder-filled groove extends along the surface of the interior of the pipe, a burner chamber with an opening along one side to receive the rod and which opening is completely closed by the rod, means for supplying fuel mixture to the burner and for directing the burner flame within the burner chamber and upon the rod, means for moving the burner rapidly along the rod in one direction so as to heat the rod suificiently to release the flux, and means thereafter for moving the burner along the rod at slower speed for progressively melting the solder.

29. A machine for soldering to the interior of pipes metallic rods provided with a linear groove filled with solder and a flux, comprising means for supporting the pipe and rod in relative position so that the solder-filled groove extends along the surface of the interior of the pipe, a burner, a carrier for the burner mounted for reciprocation along the interior of the pipe, a blower member mounted in advance of the burner and having means to direct a blast of air upon the rod, flexible means to supply compressed air to the blower and to the burner, flexible means to supply fuel gas to the burner, means movable with the carrier to control the m'xture of air and gas delivered to the burner, means movable with the carrier to control the air delivered to the lower, and means to reciprocate the carrier.

30. In a machine for soldering rods to the interior of pipes, a straight edge for engaging the pipe along the lowermost element thereof, a plurality of supporting members adjustably mounted and having obliquely disposed arms extending at the same angle at each side of the vertical plane passing through the longitudinal central line of the straight edge, and means for simultaneously raising or lowering said adjustable supports to bring the pipe into engagement with said straight edged support.

31. A machine for soldering rods to the interior of pipes comprising means for holding the pipe and rod in relative position for the soldering operation, a burner,

so that the rate of the slower movement of V the carrier may be varied as desired,

In testlmony whereof I afiix my s1gnature 1n presence of two witnesses.

EDWARDE. JoHNsoN;

Witnesses:

F. A. WHITnLnY, H. A. BOWMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

